From: Arnd Bergmann <arnd@xxxxxxxx> Subject: ARM: disable KCOV for trusted foundations code The ARM trusted foundations code is currently broken in linux-next when CONFIG_KCOV_INSTRUMENT_ALL is set: /tmp/ccHdQsCI.s: Assembler messages: /tmp/ccHdQsCI.s:37: Error: .err encountered /tmp/ccHdQsCI.s:38: Error: .err encountered /tmp/ccHdQsCI.s:39: Error: .err encountered scripts/Makefile.build:311: recipe for target 'arch/arm/firmware/trusted_foundations.o' failed I could not find a function attribute that lets me disable -fsanitize-coverage=trace-pc for just one function, so this turns it off for the entire file instead. Link: http://lkml.kernel.org/r/20180529103636.1535457-1-arnd@xxxxxxxx Fixes: 758517202bd2e4 ("arm: port KCOV to arm") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Acked-by: Olof Johansson <olof@xxxxxxxxx> Tested-by: Olof Johansson <olof@xxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: Mark Rutland <mark.rutland@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/arm/firmware/Makefile | 3 +++ 1 file changed, 3 insertions(+) diff -puN arch/arm/firmware/Makefile~arm-disable-kcov-for-trusted-foundations-code arch/arm/firmware/Makefile --- a/arch/arm/firmware/Makefile~arm-disable-kcov-for-trusted-foundations-code +++ a/arch/arm/firmware/Makefile @@ -1 +1,4 @@ obj-$(CONFIG_TRUSTED_FOUNDATIONS) += trusted_foundations.o + +# tf_generic_smc() fails to build with -fsanitize-coverage=trace-pc +KCOV_INSTRUMENT := n _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
